Descriptions

NFκB1 is a nuclear factor NFκB p105 subunit (p50 and its precursor p105), and plays pivotal role in the regulation of the inflammatory response to pathogens, autoimmune diseases, and cancerous cells. The five members of the NF-κB family are normally kept inactive in the cytoplasm by interaction with inhibitors called IκBs or the unprocessed forms of NF-κB1 and NF-κB2. The C-terminal ankyrin repeats of p105 allow it to serve as an IkappaB-like function. The ankyrin repeats interact with and shield the nuclear localization signal located at the end of Rel-homology domain (RHD) domain and DNA binding of Rel/NF-kappaB complexes. RHD domain mediates DNA binding.

Autoinhibitory domains (AIDs)

Target domain

35-327 (Rel-homology domain)

Relief mechanism

Cleavage, PTM

Assay

Accessory elements

No accessory elements

Autoinhibited structure

Activated structure

1 structures for P98150

Entry ID Method Resolution Chain Position Source
AF-P98150-F1 Predicted AlphaFoldDB

No variants for P98150

Variant ID(s) Position Change Description Diseaes Association Provenance
No variants for P98150

No associated diseases with P98150

10 regional properties for P98150

Type Name Position InterPro Accession
domain Death domain 771 - 857 IPR000488
repeat Ankyrin repeat 464 - 543 IPR002110-1
repeat Ankyrin repeat 544 - 575 IPR002110-2
repeat Ankyrin repeat 582 - 682 IPR002110-3
domain IPT domain 226 - 325 IPR002909
domain Rel homology domain, DNA-binding domain 34 - 223 IPR011539
conserved_site Rel homology domain, conserved site 52 - 58 IPR030492
domain Nuclear factor NF-kappa-B, p100 subunit, RHD domain, N-terminal 37 - 220 IPR030497
domain Rel homology dimerisation domain 228 - 326 IPR032397
domain NFkappaB IPT domain 227 - 326 IPR033926

Functions

Description
EC Number
Subcellular Localization
  • Nucleus
  • Cytoplasm
  • Nuclear, but also found in the cytoplasm in an inactive form complexed to an inhibitor (I-kappa-B)
PANTHER Family
PANTHER Subfamily
PANTHER Protein Class
PANTHER Pathway Category No pathway information available

2 GO annotations of cellular component

Name Definition
cytoplasm The contents of a cell excluding the plasma membrane and nucleus, but including other subcellular structures.
nucleus A membrane-bounded organelle of eukaryotic cells in which chromosomes are housed and replicated. In most cells, the nucleus contains all of the cell's chromosomes except the organellar chromosomes, and is the site of RNA synthesis and processing. In some species, or in specialized cell types, RNA metabolism or DNA replication may be absent.

2 GO annotations of molecular function

Name Definition
DNA-binding transcription factor activity, RNA polymerase II-specific A DNA-binding transcription factor activity that modulates the transcription of specific gene sets transcribed by RNA polymerase II.
RNA polymerase II cis-regulatory region sequence-specific DNA binding Binding to a specific upstream regulatory DNA sequence (transcription factor recognition sequence or binding site) located in cis relative to the transcription start site (i.e., on the same strand of DNA) of a gene transcribed by RNA polymerase II.

7 GO annotations of biological process

Name Definition
canonical NF-kappaB signal transduction The process in which a signal is passed on to downstream components within the cell through the I-kappaB-kinase (IKK)-dependent activation of NF-kappaB. The cascade begins with activation of a trimeric IKK complex (consisting of catalytic kinase subunits IKKalpha and/or IKKbeta, and the regulatory scaffold protein NEMO) and ends with the regulation of transcription of target genes by NF-kappaB. In a resting state, NF-kappaB dimers are bound to I-kappaB proteins, sequestering NF-kappaB in the cytoplasm. Phosphorylation of I-kappaB targets I-kappaB for ubiquitination and proteasomal degradation, thus releasing the NF-kappaB dimers, which can translocate to the nucleus to bind DNA and regulate transcription.
inflammatory response The immediate defensive reaction (by vertebrate tissue) to infection or injury caused by chemical or physical agents. The process is characterized by local vasodilation, extravasation of plasma into intercellular spaces and accumulation of white blood cells and macrophages.
innate immune response Innate immune responses are defense responses mediated by germline encoded components that directly recognize components of potential pathogens.
non-canonical NF-kappaB signal transduction The process in which a signal is passed on to downstream components within the cell through the NIK-dependent processing and activation of NF-KappaB. Begins with activation of the NF-KappaB-inducing kinase (NIK), which in turn phosphorylates and activates IkappaB kinase alpha (IKKalpha). IKKalpha phosphorylates the NF-Kappa B2 protein (p100) leading to p100 processing and release of an active NF-KappaB (p52).
positive regulation of transcription by RNA polymerase II Any process that activates or increases the frequency, rate or extent of transcription from an RNA polymerase II promoter.
response to cytokine Any process that results in a change in state or activity of a cell or an organism (in terms of movement, secretion, enzyme production, gene expression, etc.) as a result of a cytokine stimulus.
rhythmic process Any process pertinent to the generation and maintenance of rhythms in the physiology of an organism.

15 homologous proteins in AiPD

UniProt AC Gene Name Protein Name Species Evidence Code
Q04861 NFKB1 Nuclear factor NF-kappa-B p105 subunit Gallus gallus (Chicken) SS
P51509 RELB Transcription factor RelB homolog Gallus gallus (Chicken) PR
Q94527 Rel Nuclear factor NF-kappa-B p110 subunit Drosophila melanogaster (Fruit fly) EV
P19838 NFKB1 Nuclear factor NF-kappa-B p105 subunit Homo sapiens (Human) SS
Q99549 MPHOSPH8 M-phase phosphoprotein 8 Homo sapiens (Human) PR
Q8N9B4 ANKRD42 Ankyrin repeat domain-containing protein 42 Homo sapiens (Human) PR
Q6ZVZ8 ASB18 Ankyrin repeat and SOCS box protein 18 Homo sapiens (Human) PR
Q00653 NFKB2 Nuclear factor NF-kappa-B p100 subunit Homo sapiens (Human) SS
Q9CZK6 Anks3 Ankyrin repeat and SAM domain-containing protein 3 Mus musculus (Mouse) PR
P25799 Nfkb1 Nuclear factor NF-kappa-B p105 subunit [Cleaved into: Nuclear factor NF-kappa-B p50 subunit] Mus musculus (Mouse) EV
Q8VHA6 Asb18 Ankyrin repeat and SOCS box protein 18 Mus musculus (Mouse) PR
Q9WTK5 Nfkb2 Nuclear factor NF-kappa-B p100 subunit [Cleaved into: Nuclear factor NF-kappa-B p52 subunit] Mus musculus (Mouse) EV
Q9TZM3 lrk-1 Leucine-rich repeat serine/threonine-protein kinase 1 Caenorhabditis elegans SS
O22265 CAO Signal recognition particle 43 kDa protein, chloroplastic Arabidopsis thaliana (Mouse-ear cress) PR
Q9SZI3 NPR2 Regulatory protein NPR2 Arabidopsis thaliana (Mouse-ear cress) PR
10 20 30 40 50 60
MDEHFQPCLD GIDYDDFSFG SHMVEQKEPL METAVGPYLV IIEQPKQRGF RFRYVCEGPS
70 80 90 100 110 120
HGGLPGASSE KGHKTYPTVK ICNYEGMARI EVDLVTHSDP PRVHAHSLVG KQCNEAGNCV
130 140 150 160 170 180
AIVGPKDMTA QFSNLGVLHV TKKNMMEIMK EKLKKQKTRN TNGLLTEAEL REIELEAKEL
190 200 210 220 230 240
KKVMDLSIVR LRFTAYLRDS SGNFTLALQP VISDPIHDSK SPGASNLKIS RMDKTAGSVR
250 260 270 280 290 300
GGDEVYLLCD KVQKDDIEVR FYEDDENGWQ ASGDFSPTDV HKQYAIVFRT PPYHKPKIDR
310 320 330 340 350 360
PVTVFLQLKR KRGGDVSDSK QFTYYPVVED KEEVERNRKK VLPQFPQHFG GGSHMGGAGG
370 380 390 400 410 420
AGGFGAGGGG NLSFPYSSGL GYNNLYSSSP HPVGCGYQGG VQMKAASERD GDDRQAPTES
430 440 450 460 470 480
TYCRELQRHR HLCHLWLLAR RNAHALLDYS VTADPRMLLA VQRHLAASQD ENGDTPLHLA
490 500 510 520 530 540
IIHEQTAVIK QLIEVVVSIP SQQIINITNN LQQTPLHLAV ITKQPQVVQL LLEAHANPTL
550 560 570 580 590 600
LDRYGNSLLH LALQAADEEM LRMLLAHLAS ATPYLLHLPN FQGLLPVHLA VKAKSPACLD
610 620 630 640 650 660
LLVRKGADVN GVERQGGRTP LHLAVEMENL NMATHLVKKL GANVNSRTFA GNTPLHLAAG
670 680 690 700 710 720
LGSPTLTKLL LKAGADVQRE NDEPVSPSSV RVPSSDTDGD PEEQEQEQAM ELGEPALSPH
730 740 750 760 770 780
PTPEEEQEEA GPRQRLHTAL DLTRSQKVRD ILLQASQPSP PILSCPPPPS RNHLLSLDTD
790 800 810 820 830 840
ALQGLEQLLN QYGSGSDWME LAKRLGLCSL VETYKTTPSP ASALRSYELP GGSLGGLLEA
850 860 870 880 890 900
LDSMGLRGAV RMLRKPEPLE KLQSTEVKED SAYGSESVEE EQAARLKPRP VPEGELPHSQ
QQQQVH